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Python: Concatenate element-wise three given lists

Python List: Exercise - 171 with Solution

Write a Python program to concatenate element-wise three given lists.

Sample Solution:

Python Code:

def concatenate_lists(l1,l2,l3):
    return [i + j + k for i, j, k in zip(l1, l2, l3)]
    
l1 = ['0','1','2','3','4'] 
l2 = ['red','green','black','blue','white']
l3 = ['100','200','300','400','500'] 

print("Original lists:")
print(l1)
print(l2)
print(l3)
print("\nConcatenate element-wise three said lists:")
print(concatenate_lists(l1,l2,l3))

Sample Output:

Original lists:
['0', '1', '2', '3', '4']
['red', 'green', 'black', 'blue', 'white']
['100', '200', '300', '400', '500']

Concatenate element-wise three said lists:
['0red100', '1green200', '2black300', '3blue400', '4white500']

Pictorial Presentation:

Python List: Concatenate element-wise three given lists.

Flowchart:

Flowchart: Concatenate element-wise three given lists.

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Previous: Write a Python program to insert an element in a given list after every nth position.
Next: Write a Python program to remove the last N number of elements from a given list.

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Python: Tips of the Day

Floor Division:

When we speak of division we normally mean (/) float division operator, this will give a precise result in float format with decimals.

For a rounded integer result there is (//) floor division operator in Python. Floor division will only give integer results that are round numbers.

print(1000 // 300)
print(1000 / 300)

Output:

3
3.3333333333333335